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i965: Add brw_reg constructors taking a dynamically determined vector width. 

The MRF variant is going to be used extensively by the atomic counter
intrinsics to assemble untyped atomic and surface read messages
easily.

Reviewed-by: Paul Berry <stereotype441@gmail.com>
This commit is contained in:
Francisco Jerez 2013-09-11 14:19:47 -07:00
parent 5e621cb9fe
commit d58bd75263
1 changed files with 24 additions and 0 deletions
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24
src/mesa/drivers/dri/i965/brw_reg.h
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@ -282,6 +282,24 @@ brw_vec1_reg(unsigned file, unsigned nr, unsigned subnr)
WRITEMASK_X);
}
static inline struct brw_reg
brw_vecn_reg(unsigned width, unsigned file, unsigned nr, unsigned subnr)
{
switch (width) {
case 1:
return brw_vec1_reg(file, nr, subnr);
case 2:
return brw_vec2_reg(file, nr, subnr);
case 4:
return brw_vec4_reg(file, nr, subnr);
case 8:
return brw_vec8_reg(file, nr, subnr);
case 16:
return brw_vec16_reg(file, nr, subnr);
default:
assert(!"Invalid register width");
}
}
static inline struct brw_reg
retype(struct brw_reg reg, unsigned type)
@ -570,6 +588,12 @@ brw_message_reg(unsigned nr)
return brw_vec8_reg(BRW_MESSAGE_REGISTER_FILE, nr, 0);
}
static inline struct brw_reg
brw_uvec_mrf(unsigned width, unsigned nr, unsigned subnr)
{
return retype(brw_vecn_reg(width, BRW_MESSAGE_REGISTER_FILE, nr, subnr),
BRW_REGISTER_TYPE_UD);
}
/* This is almost always called with a numeric constant argument, so
* make things easy to evaluate at compile time: